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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright (c) 2000-2001 Christoph Hellwig.4 * Copyright (c) 2016 Krzysztof Blaszkowski5 */6#ifndef _VXFS_SUPER_H_7#define _VXFS_SUPER_H_8 9/*10 * Veritas filesystem driver - superblock structure.11 *12 * This file contains the definition of the disk and core13 * superblocks of the Veritas Filesystem.14 */15#include <linux/types.h>16 17/*18 * Superblock magic number (vxfs_super->vs_magic).19 */20#define VXFS_SUPER_MAGIC 0xa501FCF521 22/*23 * The root inode.24 */25#define VXFS_ROOT_INO 226 27/*28 * Num of entries in free extent array29 */30#define VXFS_NEFREE 3231 32enum vxfs_byte_order {33 VXFS_BO_LE,34 VXFS_BO_BE,35};36 37typedef __u16 __bitwise __fs16;38typedef __u32 __bitwise __fs32;39typedef __u64 __bitwise __fs64;40 41/*42 * VxFS superblock (disk).43 */44struct vxfs_sb {45 /*46 * Readonly fields for the version 1 superblock.47 *48 * Lots of this fields are no more used by version 249 * and never filesystems.50 */51 __fs32 vs_magic; /* Magic number */52 __fs32 vs_version; /* VxFS version */53 __fs32 vs_ctime; /* create time - secs */54 __fs32 vs_cutime; /* create time - usecs */55 __fs32 __unused1; /* unused */56 __fs32 __unused2; /* unused */57 __fs32 vs_old_logstart; /* obsolete */58 __fs32 vs_old_logend; /* obsolete */59 __fs32 vs_bsize; /* block size */60 __fs32 vs_size; /* number of blocks */61 __fs32 vs_dsize; /* number of data blocks */62 __fs32 vs_old_ninode; /* obsolete */63 __fs32 vs_old_nau; /* obsolete */64 __fs32 __unused3; /* unused */65 __fs32 vs_old_defiextsize; /* obsolete */66 __fs32 vs_old_ilbsize; /* obsolete */67 __fs32 vs_immedlen; /* size of immediate data area */68 __fs32 vs_ndaddr; /* number of direct extentes */69 __fs32 vs_firstau; /* address of first AU */70 __fs32 vs_emap; /* offset of extent map in AU */71 __fs32 vs_imap; /* offset of inode map in AU */72 __fs32 vs_iextop; /* offset of ExtOp. map in AU */73 __fs32 vs_istart; /* offset of inode list in AU */74 __fs32 vs_bstart; /* offset of fdblock in AU */75 __fs32 vs_femap; /* aufirst + emap */76 __fs32 vs_fimap; /* aufirst + imap */77 __fs32 vs_fiextop; /* aufirst + iextop */78 __fs32 vs_fistart; /* aufirst + istart */79 __fs32 vs_fbstart; /* aufirst + bstart */80 __fs32 vs_nindir; /* number of entries in indir */81 __fs32 vs_aulen; /* length of AU in blocks */82 __fs32 vs_auimlen; /* length of imap in blocks */83 __fs32 vs_auemlen; /* length of emap in blocks */84 __fs32 vs_auilen; /* length of ilist in blocks */85 __fs32 vs_aupad; /* length of pad in blocks */86 __fs32 vs_aublocks; /* data blocks in AU */87 __fs32 vs_maxtier; /* log base 2 of aublocks */88 __fs32 vs_inopb; /* number of inodes per blk */89 __fs32 vs_old_inopau; /* obsolete */90 __fs32 vs_old_inopilb; /* obsolete */91 __fs32 vs_old_ndiripau; /* obsolete */92 __fs32 vs_iaddrlen; /* size of indirect addr ext. */93 __fs32 vs_bshift; /* log base 2 of bsize */94 __fs32 vs_inoshift; /* log base 2 of inobp */95 __fs32 vs_bmask; /* ~( bsize - 1 ) */96 __fs32 vs_boffmask; /* bsize - 1 */97 __fs32 vs_old_inomask; /* old_inopilb - 1 */98 __fs32 vs_checksum; /* checksum of V1 data */99 100 /*101 * Version 1, writable102 */103 __fs32 vs_free; /* number of free blocks */104 __fs32 vs_ifree; /* number of free inodes */105 __fs32 vs_efree[VXFS_NEFREE]; /* number of free extents by size */106 __fs32 vs_flags; /* flags ?!? */107 __u8 vs_mod; /* filesystem has been changed */108 __u8 vs_clean; /* clean FS */109 __fs16 __unused4; /* unused */110 __fs32 vs_firstlogid; /* mount time log ID */111 __fs32 vs_wtime; /* last time written - sec */112 __fs32 vs_wutime; /* last time written - usec */113 __u8 vs_fname[6]; /* FS name */114 __u8 vs_fpack[6]; /* FS pack name */115 __fs32 vs_logversion; /* log format version */116 __u32 __unused5; /* unused */117 118 /*119 * Version 2, Read-only120 */121 __fs32 vs_oltext[2]; /* OLT extent and replica */122 __fs32 vs_oltsize; /* OLT extent size */123 __fs32 vs_iauimlen; /* size of inode map */124 __fs32 vs_iausize; /* size of IAU in blocks */125 __fs32 vs_dinosize; /* size of inode in bytes */126 __fs32 vs_old_dniaddr; /* indir levels per inode */127 __fs32 vs_checksum2; /* checksum of V2 RO */128 129 /*130 * Actually much more...131 */132};133 134 135/*136 * In core superblock filesystem private data for VxFS.137 */138struct vxfs_sb_info {139 struct vxfs_sb *vsi_raw; /* raw (on disk) superblock */140 struct buffer_head *vsi_bp; /* buffer for raw superblock*/141 struct inode *vsi_fship; /* fileset header inode */142 struct inode *vsi_ilist; /* inode list inode */143 struct inode *vsi_stilist; /* structural inode list inode */144 u_long vsi_iext; /* initial inode list */145 ino_t vsi_fshino; /* fileset header inode */146 daddr_t vsi_oltext; /* OLT extent */147 daddr_t vsi_oltsize; /* OLT size */148 enum vxfs_byte_order byte_order;149};150 151static inline u16 fs16_to_cpu(struct vxfs_sb_info *sbi, __fs16 a)152{153 if (sbi->byte_order == VXFS_BO_BE)154 return be16_to_cpu((__force __be16)a);155 else156 return le16_to_cpu((__force __le16)a);157}158 159static inline u32 fs32_to_cpu(struct vxfs_sb_info *sbi, __fs32 a)160{161 if (sbi->byte_order == VXFS_BO_BE)162 return be32_to_cpu((__force __be32)a);163 else164 return le32_to_cpu((__force __le32)a);165}166 167static inline u64 fs64_to_cpu(struct vxfs_sb_info *sbi, __fs64 a)168{169 if (sbi->byte_order == VXFS_BO_BE)170 return be64_to_cpu((__force __be64)a);171 else172 return le64_to_cpu((__force __le64)a);173}174 175/*176 * File modes. File types above 0xf000 are vxfs internal only, they should177 * not be passed back to higher levels of the system. vxfs file types must178 * never have one of the regular file type bits set.179 */180enum vxfs_mode {181 VXFS_ISUID = 0x00000800, /* setuid */182 VXFS_ISGID = 0x00000400, /* setgid */183 VXFS_ISVTX = 0x00000200, /* sticky bit */184 VXFS_IREAD = 0x00000100, /* read */185 VXFS_IWRITE = 0x00000080, /* write */186 VXFS_IEXEC = 0x00000040, /* exec */187 188 VXFS_IFIFO = 0x00001000, /* Named pipe */189 VXFS_IFCHR = 0x00002000, /* Character device */190 VXFS_IFDIR = 0x00004000, /* Directory */191 VXFS_IFNAM = 0x00005000, /* Xenix device ?? */192 VXFS_IFBLK = 0x00006000, /* Block device */193 VXFS_IFREG = 0x00008000, /* Regular file */194 VXFS_IFCMP = 0x00009000, /* Compressed file ?!? */195 VXFS_IFLNK = 0x0000a000, /* Symlink */196 VXFS_IFSOC = 0x0000c000, /* Socket */197 198 /* VxFS internal */199 VXFS_IFFSH = 0x10000000, /* Fileset header */200 VXFS_IFILT = 0x20000000, /* Inode list */201 VXFS_IFIAU = 0x30000000, /* Inode allocation unit */202 VXFS_IFCUT = 0x40000000, /* Current usage table */203 VXFS_IFATT = 0x50000000, /* Attr. inode */204 VXFS_IFLCT = 0x60000000, /* Link count table */205 VXFS_IFIAT = 0x70000000, /* Indirect attribute file */206 VXFS_IFEMR = 0x80000000, /* Extent map reorg file */207 VXFS_IFQUO = 0x90000000, /* BSD quota file */208 VXFS_IFPTI = 0xa0000000, /* "Pass through" inode */209 VXFS_IFLAB = 0x11000000, /* Device label file */210 VXFS_IFOLT = 0x12000000, /* OLT file */211 VXFS_IFLOG = 0x13000000, /* Log file */212 VXFS_IFEMP = 0x14000000, /* Extent map file */213 VXFS_IFEAU = 0x15000000, /* Extent AU file */214 VXFS_IFAUS = 0x16000000, /* Extent AU summary file */215 VXFS_IFDEV = 0x17000000, /* Device config file */216 217};218 219#define VXFS_TYPE_MASK 0xfffff000220 221#define VXFS_IS_TYPE(ip,type) (((ip)->vii_mode & VXFS_TYPE_MASK) == (type))222#define VXFS_ISFIFO(x) VXFS_IS_TYPE((x),VXFS_IFIFO)223#define VXFS_ISCHR(x) VXFS_IS_TYPE((x),VXFS_IFCHR)224#define VXFS_ISDIR(x) VXFS_IS_TYPE((x),VXFS_IFDIR)225#define VXFS_ISNAM(x) VXFS_IS_TYPE((x),VXFS_IFNAM)226#define VXFS_ISBLK(x) VXFS_IS_TYPE((x),VXFS_IFBLK)227#define VXFS_ISLNK(x) VXFS_IS_TYPE((x),VXFS_IFLNK)228#define VXFS_ISREG(x) VXFS_IS_TYPE((x),VXFS_IFREG)229#define VXFS_ISCMP(x) VXFS_IS_TYPE((x),VXFS_IFCMP)230#define VXFS_ISSOC(x) VXFS_IS_TYPE((x),VXFS_IFSOC)231 232#define VXFS_ISFSH(x) VXFS_IS_TYPE((x),VXFS_IFFSH)233#define VXFS_ISILT(x) VXFS_IS_TYPE((x),VXFS_IFILT)234 235/*236 * Inmode organisation types.237 */238enum {239 VXFS_ORG_NONE = 0, /* Inode has *no* format ?!? */240 VXFS_ORG_EXT4 = 1, /* Ext4 */241 VXFS_ORG_IMMED = 2, /* All data stored in inode */242 VXFS_ORG_TYPED = 3, /* Typed extents */243};244 245#define VXFS_IS_ORG(ip,org) ((ip)->vii_orgtype == (org))246#define VXFS_ISNONE(ip) VXFS_IS_ORG((ip), VXFS_ORG_NONE)247#define VXFS_ISEXT4(ip) VXFS_IS_ORG((ip), VXFS_ORG_EXT4)248#define VXFS_ISIMMED(ip) VXFS_IS_ORG((ip), VXFS_ORG_IMMED)249#define VXFS_ISTYPED(ip) VXFS_IS_ORG((ip), VXFS_ORG_TYPED)250 251/*252 * Get filesystem private data from VFS superblock.253 */254#define VXFS_SBI(sbp) \255 ((struct vxfs_sb_info *)(sbp)->s_fs_info)256 257#endif /* _VXFS_SUPER_H_ */258